Magnetic and Gravimetric Study of Pratinha I Anomaly (MG)

The magnetic and gravimetric anomaly of Pratinha I (MG) is a probable response of an alkaline intrusion, so as many others in the southwest of Minas Gerais. This study aims to estimate the nature of the source body using different techniques.<br>Two different scenarios are designed based on the geological history of the region and on results from the applied techniques and inversions. The first one points to an intrusion marked by a significant magnetic remanence. The second one suggests an intrusion delimited by the Bocaina Shearing Zone, with no significant magnetic remanence. The common point observed between both the scenarios is a bulging in the eastern part of the Bocaina Shearing Zone, probably caused by the intrusion and subsequent faults at southeast of the body.